Extension Circular 631
Revised January 1962
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The spray schedule in this leaflet was prepared for the home gardener. It does not meet
the exacting requirements of the commercial
fruit grower. Number of recommended materials and time of application are a minimum.
The materials recommended can be purchased
in most localities. Many commercial combinations of fungicides and insecticides are available. These are effective in controlling insects
and diseases listed on the label, if used as the
manufacturer recommends.
Sa Seedcde
Time of Application
Early spring (dormant) ------------------------
Just before buds open,
Pink ------------------------------------------------------------
Just before blossoms open.
Petal fall ----------------------------------------------------
\Vhen blossom petals have fallen,
To reduce costs the recommended materials
may be purchased in 3- or 4-pound packages,
or in -gallon or 1-gallon containers. The ma-
terials are relatively stable and can be stored
for several years without losing their effectiveness.
If the spray recommendations are followed,
the mature fruit will not carry an undue chemical residue. All fruits should he washed before
eating.
or spray drift from getting on adjacent
painted buildings.
DDT 2 T plus malathion 2 t 50% emulsion con-
spider mite, pear psylla.
Four weeks later ......................................
Codling moth, spider mites, pear psylla.
Four weeks later ......................................
Codling moth, spider mites.
Apply this spray to late-maturing
varieties only.
centrate, plus wettable sulfur 6 T. (Methoxychlor
2 T or Sevin 2 T may be substituted for DDT
in all apple and pear sprays.)
Same as petal fall.
DDT 2 T plus malathion 2 t 50% emulsion concentrate.
DDT 2 T plus malathion 2 t 50% emulsion concentrate.f
DDT 2 T plus malathion 2 t 50%
emulsion concentrate.t
Peach
Dormant ....................................................
Two sprays December 15 and before
January 15.
Leaf curl.
Bloom stage ..............................................
Brown rot blossom blight.
Puratized Agricultural Spray 1 t. or TAG
Coryneum blight.
Wettable sulfur 6 T.
Apply DDT
cup to lower limbs and trunk and
Spray once per week during bloom.
Apply first spray when first bloom
Lime sulfur
1
cups, or Puratized Agricultural
Spray 1 T, or TAG 1 t.
t.
One week after blossom petals have
fallen -----------------------------------------------------Summer spray ..........................................
July 10 to 15, and again 3 weeks
later,
Peach and prune root borer. Young
trees are especially susceptible to
injury.
Ten to 14 days before picking
Brown rot, western spotted cucumber
beetle (western Oregon only),
After picking (September or October)
Coryneum blight.
around base of tree.
Methoxychlor 2 to 3 T or Sevin 2 T plus wettable
sulfur 6 T. If spider mite becomes a problem,
add malathion 2 t 50% emulsion concentrate or
Kelthane 2 T.
Copper spray plus spreader-sticker (follow manufacturer's directions),
Cherry
Bloom stage ..............................................
Brown rot blossom blight.
Puratized Agricultural Spray 1 t or TAG
appears.
Early summer ..........................................
Cherry fruit fly, brown rot.
Use methoxychlor 3 T or Sevin 2 T, Apply every
7 to 10 days until harvest. Flies rest on foliage
When fruit flies first emergedate
other buildings. Use a large piece of canvas
or cardboard to prevent the lime-sulfur spray
Scab, mildew, codling moth, aphid,
Three weeks later ....................................
Spray once per week during bloom.
Apply first spray when first bloom
Lime-sulfur will discolor paint on houses and
Scab, mildew.
Lime sulfur 1 cups. (Do not use lime sulfur around
painted buildings. See page 1.)
Lime sulfur cup.
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oughly wetting the leaves, twigs, and branches.
When mixed with water, some chemicals such
as DDT, methoxychlor, Sevin, wettable sulfur,
and ziram tend to settle out. Shake or stir the
spray mixture frequently during application.
Blister mite, scale, scab.
Codling moth, spider mites, aphids,
pear psylla, scab, mildew.
Codling moth, spider mites, pear psylla.
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it can be done. Good coverage means thor-
Materials and Amount Per 1 Gallon of Water*
Apple and Pear
Three weeks later ..................................
To get good pest control, thorough spray
coverage of trees is necessary. It is hard to get
complete coverage with hand equipment, but
Insect or Disease
other than cherry, so spray as much of sur-
announced by County agents. Usually
when Royal Anns first turn red. If
rains occur, add wettable sulfur for
brown rot control. If heavy rain
rounding foliage as practical. (5% methoxychlor
or, 10% Sevin dust is also effective, but will re-
quire a good duster for thorough application.)
follows spraying, repeat spray.
Summer sprays (if pests appear)
t.
Aphids, mites, slugs.
Malathion 2 t., 50% emulsion concentrate.
The amount of active ingredient of a pesticide may vary with the name-brand. Ask your pesticide dealer to help you calculate the correct dosages of his product
to meet the above recommendations. tlf DDT + malathion fails to control spider mites, add Kelthane.
TTahlespoon. tteaspoon.
-_.,sti'
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Formulations and Concentrations of Materials to Use in Spray Schedules
Material
Formulation and Concentration
Captan
50% wettable powder
DDT............................................................................................................
50% wettable powder
Keithane....................................................................................................
18% wettable powder
Limesulfur
Liquid
..............................................................................................
Malathion..................................................................................................
50% emulsion concentrate
Methoxychior............................................................................................
50% wettable powder
*Puratjzed Agricultural Spray
Liquid (5% phenyl mercuri triethanol ammonium lactate)
............................................................
50% wettable powder
*TAG
Liquid (10% phenyl mercuric acetate)
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Sevin............................................................................................................
..........................................................................................................
Wettablesulfur
......................................................................................
Ziram..........................................................................................................
Wettable powder
76% wettable powder
These mercury-containing fungicides are poisonouskeep them from childrei and animals. Do not apply these materials after fruit is formed.
Prune and Plum
Susceptible to peach and prune root borers. Follow
recommended control listed under peaches.
If brown rot is severe on maturing fruit, dust with
sulfur or spray with wettable sulfur.
Apricot
Very susceptible to Coryneum blight on the fruit.
For control, spray with captan or ziram one week after
petals have fallen. Spray again in September or October
with coppers, as recommended under peaches.
Apricot trees are often injured by sulfur sprays
or dusts.
Nuts
It is necessary for commercial growers tt control
diseases and insect pests of walnuts and filberts. In
most instances, it is impractical for the home owner
Aphids frequently become' abundant on walnut
trees and a nuisance when the honeydew which they
secrete drips on sidewalks or spots the finish of parked
cars. On the smaller trees, aphids can be controlled
with malathion applied by hand sprayers.
Filberts. Bacterial blight may girdk and kill young
trees. The disease may kill many buds and nut-bearing
twigs in older trees. Plant disease-free trees. Spray
young trees in late summer (August) before the fall
rains, with a fixed copper at the rate of 6T per gallon
or 3 pounds per 50 gallons of spray. Spray again in
the fall when of the leaves are off the trees, and again
in early spring when leaf 'buds are breaking open.
Aphids also attack filbert trees and can be controlled with malathion or Sevin. Filbert moth larvae
cause "wormy" filberts. This insect is controlled by
applying Sevin spray or dust about July 10 and again
the first week in August. Leaf roller larvae may attack
filberts in late April and May and can be controlled
with Sevin.
to attempt these control practices.
Walnuts. Bacterial blight causes black blotches on
walnuts. It is impractical to attempt control of this
disease with hand sprayers.
This leaflet was prepared by lain C. MacSwan, Extension plant
pathology specialist, and R. W. Every, Extension entomology
specialist, Oregon State University, Corvallis.
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Formulations and Concentrations of Materials to Use in Spray Schedules
Material
Formulation and Concentration